Here's a couple I had tested. I was trying for lower pressure loads. I squished the wads all the way down before adding shot gained maybe 1/16" space. I don't think you can find a 1 0z 2 1/2" published data.

RST 2 1/2" 6 fold
Ched 209
Longshot
Sg 16
All loads 7 1/2 shot.

1 oz with 19.0 LS w/BPI extreme spreader
fps 1132 8700 psi

1 oz with 18.2 LS (note 18.2)
fps 1135 6900 psi

15/16 oz 19.0 LS w/BPI spreader
fps 1138 6700 psi

15/16 oz 19.0 LS
fps 1140 6700 psi

Load at your own risk....mileage may vary

Last edited by 2holer; 11/10/13 04:49 PM.